Fix unsupported ARIA attributes on facet panels

[erinchambers]

Issue Description

Elements must only use supported ARIA attributes
We need to remove the aria-expanded attribute from the body of each expandable facet panel. This needs to be fixed in the date limit facet code as well as the "default" facet code.

Here's how it shows up in our date limit facet code, for example:

div class="panel-body collapse in" id="dates" aria-expanded="true" style="">

Suggested Fixes

The aria-expanded attribute belongs on the button or link that expands the panel, not the panel itself. We already have aria-expanded on the buttons that expand each panel, so we just need to remove any instances where it's showing up on <div class="panel-body ...">.

[erinchambers]

Only the class and the id are coming from the Rails views/partials; what part of Orchid is injecting the aria-expanded and style attributes?